Warranty: 1 Year Features: USB headset with digital HD sound and USB connector. Adjustable microphone boom, headband, and leatherette earpads; fits most head sizes and can be worn on either side. Durable design with easy-to-clean leatherette earpads. Plug and play; no installation required. Skin-friendly ear cushions designed to fully cover the ears for enhanced comfort and sound quality. Technical Specifications: Rated Power: 10 mW Max Power: 20 mW Impedance: 32? ±15% Speaker Sensitivity: 115 ±3 dB Channel Balance: 3 dB Speaker Diameter: 40 mm Mic Frequency Range: 20 Hz – 20 kHz Mic Type: Omnidirectional Mic Sensitivity: -42 ±3 dB Mic Impedance: <2200? Plug: USB Cable: Braided Headphone Size: 180 × 165 × 65 mm